Description; Front Panel - AKG APS4 User Instructions

Description

The APS4 is an antenna splitter for setting up UHF multichannel systems with up to four
Description
receivers per antenna splitter. (Note that the number of channels you can actually operate
simultaneously depends on local frequency plans.)
The APS4 features two rear panel antenna inputs for connecting SRA2 B/W or RA4000 B/W
active antennas with built-in boosters. Each antenna input provides a 12 V DC supply voltage
for powering up to three active antenna components, e.g., one active antenna and two AB
4000 antenna boosters. Also located on the rear panel are two sets of four antenna output
connectors for up to four diversity receivers and two additional antenna outputs for feeding the
antenna signal to additional APS4 antenna splitters.
The APS4 is housed in a 1 U, half-rack case so you can mount two antenna splitters in a
single rack space.
The APS4 can be powered from a local power supply.
Both the antenna boosters and the antenna splitter are wideband devices for the entire UHF
band.

Front Panel

Fig 1: APS4 front panel
The antenna splitter front panel provides the following controls and indicators:
ANTENNA A, ANTENNA B: The blue OK LED will be lit for as long as the ANTENNA A
IN/ANTENNA B IN input provides the correct supply voltage for active components.
Should the supply voltage at an input be shorted or fail (drop below 2 V) the OK LED for that
input will extinguish and the red ERROR LED be lit instead.
The two OK LEDs do NOT indicate the operating status of the connected antenna booster and
therefore will not go out when you disconnect an antenna cable.
NOTE
CLA (Cable Length Adjustment): The round plate with the AKG logo covers a bank of three DIP
switches for matching the antenna inputs (ANTENNA A IN, ANTENNA B IN) to the length of the
connected cable run.
APS4 21